Hematophagous bats are fascinating mammals due to their social structure and complex anatomical and physiological characters. We present evidence of the potential use of the giant armadillo (Priodontes maximus) in the feeding spectrum of the common vampire bat Desmodus rotundus. Observations were made in the Parque Sesc Serra Azul, located in the municipality of Rosário Oeste, Mato Grosso, Brazil, using camera traps. Although hematophagous bats use native prey in nature, records of this feeding activity are less common. The use of camera traps has become an efficient tool to obtain ecological data on many mammals and allows us to assess interactions and associations between species in non-invasive ways.